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Region: PAC

Geographic Zones: California - Zone 4 » SOUTHERN CALIFORNIA - Zone 42 » Northern Channel Islands - Zone 4202 » San Miguel - Zone 420201

Survey Types: Fish Only, Invertebrates Only, Fish & Invertebrates

Dates: 1/1/93 - 10/14/25

Total Surveys: 230

#Species Reported: 136

Average Species Reported on a Survey by Expert Surveyors: 23.25

Average Species Reported on a Survey by Novice Surveyors: 14.44

Survey Type: FO = Fish Only; IO = Invertebrates Only; FI = Fish & Invertebrates - How to interpret REEF data?
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Click a column header to sort by that column. Hold shift and click to sort by multiple columns

SurveysBottom Time
ExpertNovice
CodeNameFOIOFIFOIOFI(H:M)
4California26037114053154:45
42SOUTHERN CALIFORNIA26037114053154:45
4202Northern Channel Islands26037114053154:45
420201San Miguel26037114053154:45
42020101Crook Point1007027:39
42020102Rain Barrel10280712:17
42020103Miracle0001000:26
42020104Inside Wycoff Ledge6051401022:44
42020105Hare Rock407130319:32
42020106Lovers / Little Lovers0013013:16
42020107Can Rock1007015:22
42020108Kidd Rock0028016:45
42020109Cravey0002001:01
42020110Lurker's0002001:04
42020111Otter Harbor20011008:35
42020112Cuba Shipwreck0001000:30
42020113Prince Island0012002:33
42020114Bat Rock0001000:40
42020115Pt. Bennett204130617:59
42020116Adam's Cove203100413:37
42020117Tyleer Bight0031023:55
42020118Oil Spring3014036:55
42020119Westcott Shoals1000000:39
42020120Judith Rock South1042078:13
42020121Nifty Rock2014036:22
42020122Crab City0020033:51
42020123Abalone Alley0010000:50
TOTALS26037114053154:45

Species

%SF = Sighting Frequency; DEN = Density Score - How to interpret REEF data?
Bar length corresponds to sighting frequency
Color saturation corresponds to density score
Click + to display species image and additional information.
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Bat Star - Echinoderms
(Patiria miniata)
SF: 86.67% | DEN: 3.06
Blue Rockfish - generic ID - Scorpionfish
(Sebastes mystinus/diaconus)
SF: 79.13% | DEN: 3.01
Giant Kelp - Algae
(Macrocystis integrifolia / pyrifera)
SF: 78.89% | DEN: 3.18
Painted Greenling - Greenling
(Oxylebius pictus)
SF: 75.65% | DEN: 2.15
California Sheephead - Wrasse
(Bodianus pulcher)
SF: 73.04% | DEN: 2.21
Kelp Rockfish - Scorpionfish
(Sebastes atrovirens)
SF: 70% | DEN: 2.19
Orange Puffball Sponge - Poriferans
(Tethya aurantia)
SF: 70% | DEN: 2.51
Giant Spined Star - Echinoderms
(Pisaster giganteus)
SF: 67.78% | DEN: 2.44
Strawberry Anemone - Cnidarians
(Corynactis californica)
SF: 66.67% | DEN: 0.15
Red Sea Urchin - Echinoderms
(Mesocentrotus franciscanus)
SF: 65.56% | DEN: 3.2
Striped Seaperch - Surfperch
(Embiotoca lateralis)
SF: 58.7% | DEN: 2.63
White-spotted Anemone - Cnidarians
(Urticina sp.)
SF: 57.78% | DEN: 2.6
Blackeye Goby - Goby
(Rhinogobiops nicholsii)
SF: 56.52% | DEN: 2.16
Chestnut Cowry - Mollusks
(Cypraea spadicea)
SF: 52.22% | DEN: 1.96
Orange Cup Coral - Cnidarians
(Balanophyllia elegans)
SF: 52.22% | DEN: 3.36
Purple Urchin - Echinoderms
(Strongylocentrotus purpuratus)
SF: 52.22% | DEN: 2.81
Olive Rockfish - Scorpionfish
(Sebastes serranoides)
SF: 50% | DEN: 1.95
Senorita - Wrasse
(Oxyjulis californica)
SF: 50% | DEN: 3.03
Black Perch - Surfperch
(Embiotoca jacksoni)
SF: 48.7% | DEN: 2.09
Lingcod - Greenling
(Ophiodon elongatus)
SF: 46.96% | DEN: 1.42
Southern Sea Palm - Algae
(Eisenia arborea)
SF: 44.44% | DEN: 3.23
Kellet's Whelk - Mollusks
(Kelletia kelletii)
SF: 43.33% | DEN: 1.72
Sunflower Star - Echinoderms
(Pycnopodia helianthoides)
SF: 42.22% | DEN: 2.03
Pile Perch - Surfperch
(Rhacochilus vacca)
SF: 41.74% | DEN: 2.01
Warty Sea Cucumber - Echinoderms
(Parastichopus parvimensis)
SF: 41.11% | DEN: 2
Black-and-Yellow Rockfish - Scorpionfish
(Sebastes chrysomelas)
SF: 37.39% | DEN: 1.67
Copper Rockfish - Scorpionfish
(Sebastes caurinus)
SF: 37.39% | DEN: 1.71
Sea Lemon - Mollusks
(Peltodoris nobilis)
SF: 35.56% | DEN: 1.72
Giant Keyhole Limpet - Mollusks
(Megathura crenulata)
SF: 33.33% | DEN: 1.8
Treefish - Scorpionfish
(Sebastes serriceps)
SF: 33.04% | DEN: 1.49
Gopher Rockfish - Scorpionfish
(Sebastes carnatus)
SF: 32.61% | DEN: 1.72
Opalescent Nudibranch - Mollusks
(Hermissenda crassicornis / opalescens)
SF: 30% | DEN: 1.78
California Sea Cucumber - Echinoderms
(Parastichopus californicus)
SF: 28.89% | DEN: 1.58
Cobalt Sponge - Poriferans
(Hymenamphiastra cyanocrypta)
SF: 28.89% | DEN: 0.04
Red Abalone - Mollusks
(Haliotis rufescens)
SF: 28.89% | DEN: 2.08
Tubesnout - Tubesnout
(Aulorhynchus flavidus)
SF: 28.7% | DEN: 3.44
Vermilion Rockfish - Scorpionfish
(Sebastes miniatus)
SF: 27.83% | DEN: 1.44
Rock Scallop - Mollusks
(Crassadoma gigantea)
SF: 27.78% | DEN: 1.76
Spanish Shawl - Mollusks
(Flabellina iodinea)
SF: 27.78% | DEN: 1.8
Blacksmith - Damselfish
(Chromis punctipinnis)
SF: 27.39% | DEN: 2.65
Feather Duster Worm (E. polymorpha) - Annelids
(Eudistylia polymorpha)
SF: 26.67% | DEN: 2.5
Kelp Perch - Surfperch
(Brachyistius frenatus)
SF: 25.65% | DEN: 2.1
Gumboot Chiton - Mollusks
(Cryptochiton stelleri)
SF: 25.56% | DEN: 1.91
Tube-dwelling Anemone - Cnidarians
(Pachycerianthus fimbriatus)
SF: 25.56% | DEN: 2.39
Cabezon - Longfin Sculpins
(Scorpaenichthys marmoratus)
SF: 25.22% | DEN: 1.24
Red Volcano Sponge - Poriferans
(Acamus erithacus)
SF: 24.44% | DEN: 2.32
Lacy Bryozoan - Bryozoans
(Phidolopora pacifica)
SF: 22.22% | DEN: 2.2
Northern Sea Palm - Algae
(Pterygophora californica)
SF: 22.22% | DEN: 3.2
Stalked Tunicate - Urochordates
(Styela montereyensis)
SF: 22.22% | DEN: 1.7
Juvenile (YOY) Rockfish - Unidentified - Scorpionfish
(Sebastes sp. (YOY))
SF: 22.17% | DEN: 2
Fluted Bryozoan - Bryozoans
(Primavelans insculpta)
SF: 21.11% | DEN: 2.58
Spiny Brittlestar - Echinoderms
(Ophiothrix spiculata)
SF: 18.89% | DEN: 2.59
Black Rockfish - Scorpionfish
(Sebastes melanops)
SF: 18.26% | DEN: 2.05
Red Turban Snail - Mollusks
(Lithopoma gibberosum)
SF: 17.78% | DEN: 2.38
Rubberlip Seaperch - Surfperch
(Rhacochilus toxotes)
SF: 16.09% | DEN: 1.95
Snubnose Sculpin - Marine Sculpins
(Orthonopias triacis)
SF: 13.48% | DEN: 1.45
Leather Star - Echinoderms
(Dermasterias imbricata)
SF: 13.33% | DEN: 1.75
Brown Rock Crab - Arthropods
(Romaleon antennarium)
SF: 12.22% | DEN: 1.36
Crowned Urchin - Echinoderms
(Centrostphanus coronatus)
SF: 11.11% | DEN: 2.6
Northern Kelp Crab - Arthropods
(Pugettia producta)
SF: 11.11% | DEN: 1.6
San Diego Dorid / Northern Leopard Dorid - Mollusks
(Diaulula sandiegensis / odonoghuei)
SF: 11.11% | DEN: 1.5
Kelp Bass - Sea Bass
(Paralabrax clathratus)
SF: 10.43% | DEN: 2
Southern Staghorn Bryozoan - Bryozoans
(Diaperoforma californica)
SF: 10% | DEN: 2.67
Yellowtail Rockfish - Scorpionfish
(Sebastes flavidus)
SF: 9.57% | DEN: 1.77
Brown Rockfish - Scorpionfish
(Sebastes auriculatus)
SF: 9.13% | DEN: 1.52
Coonstripe Shrimp - Arthropods
(Pandalus danae / gurneyi)
SF: 8.89% | DEN: 2
Wavy Turban Snail - Mollusks
(Lithopoma undosum)
SF: 8.89% | DEN: 2
Island Kelpfish - Labrisomids
(Alloclinus holderi)
SF: 8.7% | DEN: 2
Coralline Sculpin - Marine Sculpins
(Artedius corallinus)
SF: 6.96% | DEN: 1.44
Rainbow Seaperch - Surfperch
(Hypsurus caryi)
SF: 6.96% | DEN: 1.81
Colonial Sand-tube Worm - Annelids
(Phragmatopoma californica)
SF: 6.67% | DEN: 0
Light-bulb Tunicate - Urochordates
(Clavelina huntsmani)
SF: 6.67% | DEN: 2.67
Kelp Greenling - Greenling
(Hexagrammos decagrammus)
SF: 5.65% | DEN: 1.77
White Urchin - Echinoderms
(Lytechinus anamesus)
SF: 5.56% | DEN: 2
Unidentified Sculpin - Marine Sculpins
(Psychrolutidae spp.)
SF: 5.22% | DEN: 1.33
Masking/Sheep Crab - Arthropods
(Loxorthynchus crispatus (L. grandis))
SF: 4.44% | DEN: 1.75
Northern Staghorn Bryozoan - Bryozoans
(Heteropora pacifica)
SF: 4.44% | DEN: 2.25
Red Sea Hare - Mollusks
(Aplysia californica)
SF: 4.44% | DEN: 1.75
Unidentified Abalone - Mollusks
(Haliotis sp.)
SF: 4.44% | DEN: 2.5
Giant Kelpfish - Clinid
(Heterostichus rostratus)
SF: 4.35% | DEN: 1.3
Unidentified Rockfish - Scorpionfish
(Sebastes sp.)
SF: 4.35% | DEN: 2.7
Speckled Sanddab - Sand Flounder
(Citharichthys stigmaeus)
SF: 3.91% | DEN: 1.67
Bat Ray - Eagle Ray
(Myliobatis californica)
SF: 3.48% | DEN: 1
Grass Rockfish - Scorpionfish
(Sebastes rastrelliger)
SF: 3.48% | DEN: 1.25
Unidentified Surfperch - Surfperch
(Embiotocidae spp.)
SF: 3.48% | DEN: 2.25
Spiny Lobster - Arthropods
(Panulirus interruptus)
SF: 3.33% | DEN: 1.67
Crevice Kelpfish - Clinid
(Gibbonsia montereyensis)
SF: 3.04% | DEN: 1.14
Halfmoon - Sea Chub
(Medialuna californiensis)
SF: 2.61% | DEN: 1.83
Opaleye - Sea Chub
(Girella nigricans)
SF: 2.61% | DEN: 2
Christmas Tree Worm - Annelids
(Spirobranchus spinosus)
SF: 2.22% | DEN: 1.5
Jack Mackerel - Jack
(Trachurus symmetricus)
SF: 2.17% | DEN: 4
Yellowfin Fringehead - Blenny (pike, tube and flag)
(Neoclinus stephensae)
SF: 2.17% | DEN: 1.4
Blue Rockfish (was Blue-blotched species) - Scorpionfish
(Sebastes mystinus)
SF: 1.74% | DEN: 3
Bocaccio - Scorpionfish
(Sebastes paucispinis)
SF: 1.74% | DEN: 1.75
Calico Rockfish - Scorpionfish
(Sebastes dalli)
SF: 1.74% | DEN: 1.5
Rock Wrasse - Wrasse
(Halichoeres semicinctus)
SF: 1.74% | DEN: 2.25
Silversides spp. - Silverside
(Atherinidae spp.)
SF: 1.74% | DEN: 3
Spotted Kelpfish - Clinid
(Gibbonsia elegans)
SF: 1.74% | DEN: 1
Topsmelt - Silverside
(Atherinops affinis)
SF: 1.74% | DEN: 4
California Scorpionfish - Scorpionfish
(Scorpaena guttata)
SF: 1.3% | DEN: 1
Canary Rockfish - Scorpionfish
(Sebastes pinniger)
SF: 1.3% | DEN: 1.67
Spotted Sand Bass - Sea Bass
(Paralabrax maculatofasciatus)
SF: 1.3% | DEN: 1.67
Wolf-eel - Wolffish
(Anarrhichthys ocellatus)
SF: 1.3% | DEN: 1
Green Abalone - Mollusks
(Haliotis fulgens)
SF: 1.11% | DEN: 2
Oarweed - Algae
(Laminaria farlowii)
SF: 1.11% | DEN: 4
Purple Hydrocoral - Cnidarians
(Stylaster califrnicus)
SF: 1.11% | DEN: 1
Red Gorgonian - Cnidarians
(Leptogorgia chilensis)
SF: 1.11% | DEN: 1
Red Octopus - Mollusks
(Octopus rubescens)
SF: 1.11% | DEN: 1
Two-spot Octopus - Mollusks
(Octopus bimaculatus)
SF: 1.11% | DEN: 1
Barred Sand Bass - Sea Bass
(Paralabrax nebulifer)
SF: 0.87% | DEN: 2.5
Blue / Deacon Rockfish YOY - Scorpionfish
(Sebastes mystinus / diaconus (YOY))
SF: 0.87% | DEN: 2.5
C-O Sole - Righteye Flounder
(Pleuronichthys coenosus)
SF: 0.87% | DEN: 1
Northern Ronquil - Ronquil
(Ronquilus jordani)
SF: 0.87% | DEN: 1
Ocean Whitefish - Tilefish
(Caulolatilus princeps)
SF: 0.87% | DEN: 1.5
Reef Perch - Surfperch
(Micrometrus aurora)
SF: 0.87% | DEN: 2.5
Scalyhead Sculpin - Marine Sculpins
(Artedius harringtoni)
SF: 0.87% | DEN: 1.5
Tope Shark - Houndsharks
(Galeorhinus galeus)
SF: 0.87% | DEN: 2
Unidentified Pipefish - Pipefish & Seahorse
(Syngnathidae spp.)
SF: 0.87% | DEN: 2
White Seaperch - Surfperch
(Phanerodon furcatus)
SF: 0.87% | DEN: 3
Barred Surfperch - Surfperch
(Amphistichus argenteus)
SF: 0.43% | DEN: 1
Blue Shark - Requiem Shark
(Prionace glauca)
SF: 0.43% | DEN: 1
Bluebanded Goby - Goby
(Lythrypnus dalli)
SF: 0.43% | DEN: 2
Giant Sea Bass - Wreckfish
(Stereolepis gigas)
SF: 0.43% | DEN: 3
Horn Shark - Bullhead Shark
(Heterodontus francisci)
SF: 0.43% | DEN: 1
Lavender Sculpin - Marine Sculpins
(Leiocottus hirundo)
SF: 0.43% | DEN: 1
Northern Anchovy - Anchovy
(Engraulis mordax)
SF: 0.43% | DEN: 2
Rosy Rockfish - Scorpionfish
(Sebastes rosaceus)
SF: 0.43% | DEN: 2
Shiner Perch - Surfperch
(Cymatogaster aggregata)
SF: 0.43% | DEN: 2
Spotted Turbot - Righteye Flounder
(Pleuronichthys ritteri)
SF: 0.43% | DEN: 1
Tiger Rockfish - Scorpionfish
(Sebastes nigrocinctus)
SF: 0.43% | DEN: 2
Unidentified Flatfish - Righteye Flounder
(Flatfish sp.)
SF: 0.43% | DEN: 2
Unidentified Kelpfish - Clinid
(Clinidae spp.)
SF: 0.43% | DEN: 1
Vermilion Rockfish YOY - Scorpionfish
(Sebastes miniatus (YOY))
SF: 0.43% | DEN: 2
White Seabass - Drum
(Atractoscion nobilis)
SF: 0.43% | DEN: 2
Yellowtail - Jack
(Seriola lalandi)
SF: 0.43% | DEN: 2
Zebra Goby - Goby
(Lythrypnus zebra)
SF: 0.43% | DEN: 2